Dell R515 manual Acoustical Performance 12 HDD Chassis, Definitions

Dell

	Max. Configuration @ 23 ± 2 °C				Operating		LWA-UL		LpA	Prominent
	CPU	HDD	RAID	DIMM	Mode		(Bels)		(dBA)	Tones
2 x AMD		8 x 3.5‖			Idle	5.4		43		Yes
4180			PERC
		600GB SAS		8 x 8GB
6 core			H700
		15,000 rpm			Stressed	5.5		43		Yes
2.8GHz

Table 7.

Acoustical Performance (12 HDD Chassis)

Typical Configuration @ 23 ± 2 °C

Operating

LWA-

LpA

Prominent

UL

Mode

CPU

HDD

RAID

DIMM

(dBA)

Tones

(Bels)

2 x AMD

8 x 3.5‖

Idle

6.1

45

Yes

4180

PERC

2TB SATA

4 x 4GB

6 core

H700

7,200 rpm

Stressed

6.3

47

Yes

2.6GHz

Max. Configuration @ 23 ± 2 °C

Operating

LWA-

LpA

Prominent

UL

CPU

HDD

RAID

DIMM

Mode

(dBA)

Tones

(Bels)

2 x AMD

12 x 3.5‖

Idle

6.1

45

Yes

600GB SAS

4180

PERC

15,000 rpm

8 x 8GB

6 core

H700

+ 2 x SSD

Stressed

6.3

47

Yes

2.8GHz

50GB SATA

Definitions

Typical configuration: The system is populated with projected average quantity, type, capacity, speed, etc., of components.

Idle: Reference ISO7779 (1999) definition 3.1.7; system is running in its OS but no other specific activity.

Stressed Processor: An operating mode per ISO7779 (1999) definition 3.1.6. The software SPECPower_ssj2008 is utilized to stress the processors. SPECPower is set to 50% loading.

LwA – UL: The upper limit sound power level (LwA) calculated per section 4.4.2 of ISO 9296 (1988) and measured in accordance to ISO 7779 (1999).

LpA: Average bystander A-Weighted sound pressure level. The system is placed in a rack with its bottom at 25 cm from the floor. The acoustic transducers are at the four bystander positions, ref ISO7779 (1999) Section 8.6.2.

Prominent tone: Criteria of D.5 and D.8 of ECMA-74 9th ed. (2005) are followed to determine if discrete tones are prominent. The system is placed in a rack with its bottom at 75 cm from the floor. The acoustic transducer is at front bystander position, ref ISO7779 (1999) Section 8.6.2.

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PowerEdge R515 Technical Guide